Right, so the Government's demand of my encryption key to unlock the contents of my "digital brain" is no less different than the Government forcing me to take

Right, so the Government's demand of my encryption key to unlock the contents of my "digital brain" is no less different than the Government forcing me to take some truth serum to force me to reveal something I don't wish too... because it would incriminate me. And as far as I'm concerned, the 5th protects me from incriminating myself.